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Add some tests for the LengthUtils class

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Currently the LengthUtils class has no tests. This commit
adds some basic tests for the distance computations.
This commit is contained in:
Tobias Schönberg 2017-05-18 09:52:23 +02:00
parent 19eddb7d26
commit d5bba99faa
1 changed files with 46 additions and 0 deletions
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app/src/test/java/fr/free/nrw/commons/LengthUtilsTest.java Normal file
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package fr.free.nrw.commons;
import static org.hamcrest.CoreMatchers.is;
import fr.free.nrw.commons.location.LatLng;
import fr.free.nrw.commons.utils.LengthUtils;
import org.junit.Assert;
import org.junit.Test;
public class LengthUtilsTest {
@Test public void testZeroDistance() {
LatLng pointA = new LatLng(0, 0);
LatLng pointB = new LatLng(0, 0);
String distance = LengthUtils.formatDistanceBetween(pointA, pointB);
Assert.assertThat(distance, is("0m"));
}
@Test public void testOneDegreeOnEquator() {
LatLng pointA = new LatLng(0, 0);
LatLng pointB = new LatLng(0, 1);
String distance = LengthUtils.formatDistanceBetween(pointA, pointB);
Assert.assertThat(distance, is("111.2km"));
}
@Test public void testOneDegreeFortyFiveDegrees() {
LatLng pointA = new LatLng(45, 0);
LatLng pointB = new LatLng(45, 1);
String distance = LengthUtils.formatDistanceBetween(pointA, pointB);
Assert.assertThat(distance, is("78.6km"));
}
@Test public void testOneDegreeSouthPole() {
LatLng pointA = new LatLng(-90, 0);
LatLng pointB = new LatLng(-90, 1);
String distance = LengthUtils.formatDistanceBetween(pointA, pointB);
Assert.assertThat(distance, is("0m"));
}
@Test public void testPoleToPole() {
LatLng pointA = new LatLng(90, 0);
LatLng pointB = new LatLng(-90, 0);
String distance = LengthUtils.formatDistanceBetween(pointA, pointB);
Assert.assertThat(distance, is("20,015.1km"));
}
}